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I own a Toyota yaris 2015 AUTOMATIC. normal RPM is 600 but when I turn the AC on the rpm jumps to 800.is it normal, is there any issue

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Yes, it is normal.

The ac requires some 10 to 12 bhp from the engine and the ecu is allowing for that energy demand by increasing the idle speed so it will not stall.

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  • Tip - turn off the a/c when climbing mountains, especially in a low-powered car. – Weather Vane Sep 6 '20 at 19:29

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